Nemade Sanjana, Naik Chetana, Nilegaonkar Sujit, Qadri Haris, Athavale Apurva, Lawate Eknath
Department of ENT, Smt. Kashibai Navale Medical College and General Hospital, Off. Sinhgad Road, Narhe, Pune, Maharashtra 411041 India.
Indian J Otolaryngol Head Neck Surg. 2018 Jun;70(2):223-230. doi: 10.1007/s12070-017-1074-9. Epub 2017 Jan 19.
Normal middle ear volume indicates the well ventilated middle ear and subsequently the normal function of the Eustachian tube. We carried out preoperative assessment of the middle ear volume by tympanometry and scintigraphic evaluation of Eustachian tube patency in patients with unilateral otitis media. We correlated the middle ear volume and Eustachian tube patency in these patients. Prospective. A total of 58 patients with unilateral otitis media were studied. All patients underwent Eustachian tube scintigraphy. We categorized the patients as Group A with patent Eustachian tube and Group B with blocked Eustachian tube (ET). We assessed the equivalent middle ear volume (VeqME) in all patients and correlated it with ET patency. We also correlated the degree of hearing loss and intraoperative middle ear pathology in two groups. There is strong linear correlation between the ET patency and VeqME of the patients. Degree of hearing loss and the middle ear pathology is also found to be severe in patients with blocked ET and low VeqME. Preoperative assessment of patients with chronic otitis media should include the objective evaluation of middle ear volume and ET patency, as it is the reliable predictor of middle ear pathology.
正常的中耳容积表明中耳通气良好，进而表明咽鼓管功能正常。我们通过鼓室导抗图对单侧中耳炎患者进行中耳容积的术前评估，并通过闪烁显像评估咽鼓管通畅情况。我们对这些患者的中耳容积和咽鼓管通畅情况进行了相关性分析。前瞻性研究。共研究了58例单侧中耳炎患者。所有患者均接受了咽鼓管闪烁显像。我们将患者分为咽鼓管通畅的A组和咽鼓管阻塞的B组。我们评估了所有患者的等效中耳容积（VeqME），并将其与咽鼓管通畅情况进行相关性分析。我们还对两组患者的听力损失程度和术中中耳病理情况进行了相关性分析。患者的咽鼓管通畅情况与VeqME之间存在很强的线性相关性。在咽鼓管阻塞且VeqME较低的患者中，听力损失程度和中耳病理情况也被发现较为严重。慢性中耳炎患者的术前评估应包括中耳容积和咽鼓管通畅情况的客观评估，因为这是中耳病理情况的可靠预测指标。
